A good deal...at the very least I'd say it's given him some insight into how to manage big egos.
But I think the biggest thing is that he's become the ultimate "system" guy now. The zone has been working to the max due to a buy-in of team defense the last three years.
I think Coach K the savant probably had a calming influence on him. He seems a lot more confident in his team's abilities and their strengths and weaknesses than ever before.